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This was in the news here quite recently.This is the abstract of the original article, published by a group of Swedish researchers in PNAS last year.
(http://www.springerlink.com/content/k6p846386xq05722/)
It's mind boggling that the second group attempted a word-for-word copy, from a journal such as the PNAS. It's so bizzare, that a host of conspiracy theories have sprung up in discussion here, and people are waiting for a response from Anna University, where two of the authors are from.
(http://www.pnas.org/cgi/content/abstract/103/10/3518)And the this is the plagiarized article, by K. Muthukkumaran, Roshan Bokalawela, Tom Mathews and S. Selladurai, published last month in the Journal of Materials Science.Optimization of ionic conductivity in doped ceria
Oxides with the cubic fluorite structure, e.g., ceria (CeO2), are known to be good solid electrolytes when they are doped with cations of lower valence than the host cations. The high ionic conductivity of doped ceria makes it an attractive electrolyte for solid oxide fuel cells, whose prospects as an environmentally friendly power source are very promising. In these electrolytes, the current is carried by oxygen ions that are transported by oxygen vacancies, present to compensate for the lower charge of the dopant cations. Ionic conductivity in ceria is closely related to oxygen-vacancy formation and migration properties...
Determination of dopant of ceria system by density functional theory
Oxides with the cubic fluorite structure, e.g., ceria (CeO2), are known to be good solid electrolytes when they are doped with cations of lower valence than the host cations. The high ionic conductivity of doped ceria makes it an attractive electrolyte for solid oxide fuel cells, whose prospects as an environmentally friendly power source are very promising. In these electrolytes, the current is carried by oxygen ions that are transported by oxygen vacancies, present to compensate for the lower charge of the dopant cations. Ionic conductivity in ceria is closely related to oxygen-vacancy formation and migration properties...
(http://www.springerlink.com/content/k6p846386xq05722/)
It's mind boggling that the second group attempted a word-for-word copy, from a journal such as the PNAS. It's so bizzare, that a host of conspiracy theories have sprung up in discussion here, and people are waiting for a response from Anna University, where two of the authors are from.
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